When the bacteria Wolbachia infects the wasp Nasonia vitripennis, what happens?
A) The wasp dies immediately.
B) Female wasps produce less offspring.
C) Females wasps produce more offspring.
D) Female wasps are unable to produce offspring.
C
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A riboswitch mechanism is known to regulate the transcription of genes involved in:
A. lactose metabolism. B. vitamin B1 synthesis. C. tryptophan biosynthesis. D. arabinose metabolism.
Gametophytes that are completely enclosed within the walls of a spore are known as:
A. endosperm B. endosporic gametophytes C. micropyles D. rosettes E. phragmoplasts
A plant of genotype CCdd is crossed to a plant of genotype ccDD; the F1 offspring are then testcrossed to a ccdd
plant. If the genes are on different chromosomes, what percentage of the offspring will be ccdd?
a. 10 b. 20 c. 25 d. 30 e. 50
Which of the following sex-linked disorders was common among the royal families of Europe, and all of the affected males could trace their ancestry to Queen Victoria of England?
A) fragile X syndrome B) hemophilia C) color-blindness D) Duchenne muscular dystrophy E) None of the answer choices is true.